Population
Five year age groups
About this topic
Five year age groups show the population in standard five-year cohorts from early childhood through older age. Because each band covers the same span of years, the topic gives a clear and comparable view of an area's age structure.
This topic is useful for identifying growth or decline in specific cohorts and for comparing age patterns across places and over time. For service planning, it is often read together with service age groups, household types, and dwelling types.
Interpretation notes
- Age is reported as at Census night, so the counts are a snapshot of the resident age structure at that point in time.
- Because each band covers the same five-year span, this topic is best for exact cohort comparison rather than service-planning life stages.
Related topics
Key insight
In 2021, 5 to 9 year olds was the largest age group among residents in Lachlan (A), accounting for 7.8% (473 people). This share was higher than Regional NSW (6.1%). Since 2016, the biggest change was in 0 to 4 year olds, which decreased by 91 people and 1.4 percentage points.
Section overview
Age structure - Five year age groups
Lachlan (A) - Total persons (Usual residence)
This table summarises five year age groups for Lachlan (A) in 2021 for persons, with comparison against Regional NSW and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Lachlan (A), with comparison markers for Regional NSW.
0 to 4
2021 count
402
% of total
6.6%
Change from 2016
-1.4pp
402
6.6%
-1.4pp
5 to 9
2021 count
473
% of total
7.8%
Change from 2016
+0.5pp
473
7.8%
+0.5pp
10 to 14
2021 count
426
% of total
7.0%
Change from 2016
+0.6pp
426
7.0%
+0.6pp
15 to 19
2021 count
310
% of total
5.1%
Change from 2016
-0.1pp
310
5.1%
-0.1pp
20 to 24
2021 count
276
% of total
4.5%
Change from 2016
-1.2pp
276
4.5%
-1.2pp
25 to 29
2021 count
347
% of total
5.7%
Change from 2016
+0.1pp
347
5.7%
+0.1pp
30 to 34
2021 count
360
% of total
5.9%
Change from 2016
-0.5pp
360
5.9%
-0.5pp
35 to 39
2021 count
367
% of total
6.0%
Change from 2016
+1.1pp
367
6.0%
+1.1pp
40 to 44
2021 count
320
% of total
5.3%
Change from 2016
-0.2pp
320
5.3%
-0.2pp
45 to 49
2021 count
356
% of total
5.8%
Change from 2016
+0.6pp
356
5.8%
+0.6pp
50 to 54
2021 count
359
% of total
5.9%
Change from 2016
-0.4pp
359
5.9%
-0.4pp
55 to 59
2021 count
360
% of total
5.9%
Change from 2016
-1.0pp
360
5.9%
-1.0pp
60 to 64
2021 count
453
% of total
7.4%
Change from 2016
+1.1pp
453
7.4%
+1.1pp
65 to 69
2021 count
375
% of total
6.2%
Change from 2016
+0.4pp
375
6.2%
+0.4pp
70 to 74
2021 count
317
% of total
5.2%
Change from 2016
+0.5pp
317
5.2%
+0.5pp
75 to 79
2021 count
230
% of total
3.8%
Change from 2016
-0.4pp
230
3.8%
-0.4pp
80 to 84
2021 count
180
% of total
3.0%
Change from 2016
0.0pp
180
3.0%
0.0pp
85 and over
2021 count
205
% of total
3.4%
Change from 2016
+0.7pp
205
3.4%
+0.7pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-91
-1.4pp
5 to 9
+21
+0.5pp
10 to 14
+31
+0.6pp
15 to 19
-15
-0.1pp
20 to 24
-79
-1.2pp
25 to 29
0
+0.1pp
30 to 34
-38
-0.5pp
35 to 39
+66
+1.1pp
40 to 44
-22
-0.2pp
45 to 49
+31
+0.6pp
50 to 54
-34
-0.4pp
55 to 59
-70
-1.0pp
60 to 64
+62
+1.1pp
65 to 69
+14
+0.4pp
70 to 74
+28
+0.5pp
75 to 79
-31
-0.4pp
80 to 84
-5
0.0pp
85 and over
+35
+0.7pp
Data table
Five year age groups for Lachlan (A). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional NSW.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional NSW% | Count | % | Regional NSW% | Count | pp | |
| 0 to 4 | 402 | 6.6% | 5.5% | 493 | 8.0% | 5.8% | -91 | -1.4pp |
| 5 to 9 | 473 | 7.8% | 6.1% | 452 | 7.3% | 6.4% | +21 | +0.5pp |
| 10 to 14 | 426 | 7.0% | 6.3% | 395 | 6.4% | 6.1% | +31 | +0.6pp |
| 15 to 19 | 310 | 5.1% | 5.7% | 325 | 5.2% | 6.0% | -15 | -0.1pp |
| 20 to 24 | 276 | 4.5% | 5.4% | 355 | 5.7% | 5.6% | -79 | -1.2pp |
| 25 to 29 | 347 | 5.7% | 5.7% | 347 | 5.6% | 5.5% | 0 | +0.1pp |
| 30 to 34 | 360 | 5.9% | 5.9% | 398 | 6.4% | 5.5% | -38 | -0.5pp |
| 35 to 39 | 367 | 6.0% | 5.9% | 301 | 4.9% | 5.4% | +66 | +1.1pp |
| 40 to 44 | 320 | 5.3% | 5.6% | 342 | 5.5% | 6.1% | -22 | -0.2pp |
| 45 to 49 | 356 | 5.8% | 6.1% | 325 | 5.2% | 6.4% | +31 | +0.6pp |
| 50 to 54 | 359 | 5.9% | 6.2% | 393 | 6.3% | 6.8% | -34 | -0.4pp |
| 55 to 59 | 360 | 5.9% | 6.6% | 430 | 6.9% | 7.1% | -70 | -1.0pp |
| 60 to 64 | 453 | 7.4% | 6.9% | 391 | 6.3% | 6.7% | +62 | +1.1pp |
| 65 to 69 | 375 | 6.2% | 6.4% | 361 | 5.8% | 6.4% | +14 | +0.4pp |
| 70 to 74 | 317 | 5.2% | 5.9% | 289 | 4.7% | 5.0% | +28 | +0.5pp |
| 75 to 79 | 230 | 3.8% | 4.3% | 261 | 4.2% | 3.7% | -31 | -0.4pp |
| 80 to 84 | 180 | 3.0% | 2.9% | 185 | 3.0% | 2.6% | -5 | 0.0pp |
| 85 and over | 205 | 3.4% | 2.8% | 170 | 2.7% | 2.7% | +35 | +0.7pp |
| Total | 6,094 | 100.0% | 100.0% | 6,194 | 100.0% | 100.0% | -100 | 0.0pp |